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(No Model.) 2 Sheets-Sheet 1.

G. ROTHENBUOHER. VALVE MOTION FOR OORLISS STEAM ENGINES.

No. 398,751. Patented Feb. 26, 1889.

WITNESSES. UVVEIVTOH,

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(No Model.) 2 Sheets-Sheet 2'. G. ROTHENBUOHER.

VALVE MOTION FOR GORLISS STEAM ENGINES. No. 398,751. Patented Feb. 26, 1889.

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; ATTORNEYS.

I mplmr. Washington. a c

'NITED STATES'PATENT OFFICE.

GEORGE ROTHENBECHER, OF NPHV YORK, N. Y.

VALVE-MOTION FOR CORLISS STEAM-ENGINES.

SPECIFICATION forming part of Letters Patent No. 398,751, dated February 26, 1889.

Application filed November 3, 1888. Serial No. 289,872. (No model- To all whom it may concern.-

Be it known that I, GEORGE Rornnnniicnnn, of the city, county, and State of New York, have invented certain new and useful Iniprovements in Yalve-Motions for Corliss Steam-Engines, of which the following is a E. The vertically-lociprocating inlet-valves E are acted upon by spring-pressed rods G, that pass through the top plates of the valveboXes E, said rods being guided in socket-s g at the upper ends of cylindrical casings G, which are attached to the top plates. The

j rods G impart a downward pressure to the valves E by the action of spiral springs c,

sists of a valve-motion for Corliss engines in i which the steam-inlet valves are guided in suitable boxes and reciprocated by spindles having toes that engage recesses of said' valves. The reciprocating inlet-valves are acted upon by spring-pressed valve-rods l I i which are guided in the top plates of the valve-boxes and in cylindrical casings on said top plates.

In the accompanying drawings, Figure l represents a side elevation of a Corliss stean1- engine with my improved valve-motion. Fig. 2 is a vertical longitudinal section of the steam-cylinder, drawn on a larger scale and showing the construction of my improved steam-inlet valves; and Fig. 3 is a top view of the steam-cylinder with the plate of one of the valve-boxes removed.

Similar letters of reference indicate corre- 1 gaging recesses of said valves, and springspon din g parts.

In the drawings, A represents the steamcylindcr of a Corliss steanrengine; B, the

which are interposed between the sockets g and pins or collars g on said rods, as shown in Fig. 2. The oscillating motion of the steam-inlet valves is changed by the toes on the oscillating valve-spindles and the springpressed rods G to a rectilinear reciprocating motion, which is steady and reliable and by which the construction of the valve-motion is considerably simplified, as the expensive vacuum dash-pots are dispensed with.

llavin g thus described my invention, I claim as new and desire to secure by Letters Patent- 1. The combination, with a steam-cylinder and steam-chest, said steanrchest being provided with transverse guide-boxes, of springpressed rectilinear reciprocating inlet-valves, oscillating spindles operated by a bell-crank connection with the wrist-plate, and toes in said spindles engaging recesses of the valves, substantially as setforth.

2. The combination, with a steam-cylinder and steam-chest, said steam-chest being provided with transverse guide-boxes, of rectilinear rceiprocating llllGlrlllYGS, oscillating spindles operated by a ln ll-cranl connection with the wrist-plate, toes on said spindles enactuated rods that press on the top of said 5 valves, substantially as set forth.

wrist-plate, which is centrally pivoted to a fixed pin, 1), projecting from the steam-cylinv der, and C C are pivot-rods that connect the I wrist-plate with the bell-cranks D, which are i applied to the outer ends of the spindles e of the steam-inlet and exhaust-valves E and F, as customary in steam-engines of this type.

The wrist-plate is operated in the usual mani ner by an eccentric on the drivingshaft and suitable connecting-rods. The exhaustvalves E of the steanrcylinder are of the usual construction. The inlet-valves E are located in transverse guide-boxes E at both ends of the steam-chest E and provided with recesses e 3 at the under side, which are arranged by toes e of the spindles 6, so that the inlet-valves I receive a vertically-reciprocating motion by i the action of the toes e on the recessed valves 3. The combination, with a steam-cylinder and stcam-chest having transverse guide-- boxes, of rectilinear reciprocating inlet-valves guided in said boxes, oscillating spindles 0perated by a bell-crank connection with the wrist-plate, toes on said spindles engaging recesses of said valves, spring-actuated rods that press 011 the top of said valves and pass through the top plates of the valve-boxes, and

guide-casings for said presser-rods, substantially as set forth.

In testimony that I claim the foregoing as my invention I have signed my name in presence of two subscribing witnesses.

GEORGE RO'IHENBUCHER.

"Witnesses:

PAUL GoEPEL, JOHN A. STRALEY. 

